{\def\sym#1{\ifmmode^{#1}\else\(^{#1}\)\fi} \begin{tabular}{l*{6}{c}} \hline\hline
                    &\multicolumn{6}{c}{\shortstack{ Workers in non-PSL States or Counties}}                                                            \\\cmidrule(lr){2-7}
                    &\multicolumn{1}{c}{M1}&\multicolumn{1}{c}{M2}&\multicolumn{1}{c}{M3}&\multicolumn{1}{c}{M4}&\multicolumn{1}{c}{M5}&\multicolumn{1}{c}{M6}\\
\hline
\vspace{0.1em} \textit{Share in a PSL Covered State or County}&                     &                     &                     &                     &                     &                     \\
\hspace{0.5cm} Percent of Workers&       0.006\sym{***}&       0.004\sym{***}&       0.005\sym{***}&       0.005\sym{***}&       0.005\sym{***}&       0.005\sym{***}\\
\hspace{0.5cm} Percent of Establishments&       0.006\sym{***}&       0.004\sym{***}&       0.005\sym{***}&       0.005\sym{***}&       0.005\sym{***}&       0.005\sym{***}\\
\vspace{0.3cm} \\
Demographic Controls&  \checkmark         &  \checkmark         &  \checkmark         &  \checkmark         &  \checkmark         &  \checkmark         \\
Work Controls       &                     &  \checkmark         &  \checkmark         &  \checkmark         &  \checkmark         &  \checkmark         \\
Firm Controls       &                     &                     &  \checkmark         &  \checkmark         &  \checkmark         &  \checkmark         \\
State Controls      &                     &                     &                     &  \checkmark         &  \checkmark         &  \checkmark         \\
State FE            &                     &                     &                     &                     &  \checkmark         &  \checkmark         \\
Year, Month, Year $\times$ Month FE&                     &                     &                     &                     &                     &  \checkmark         \\
\hline \vspace{-.4em}&                     &                     &                     &                     &                     &                     \\
N                   &       29381         &       29381         &       29381         &       29381         &       29381         &       29381         \\
\hline\hline \multicolumn{7}{l}{\footnotesize \sym{+} \(p<0.10\), \sym{*} \(p<0.05\), \sym{**} \(p<0.01\), \sym{***} \(p<0.001\)}\\ \end{tabular} } 
